Drier.



T. G. SOHUYLER.

DRIER.

APPLICATION FILED MAY 1, 1913. I

Patented Feb. 3, 1914.

'rfioMAs o. SCHUYLER, or BROOKLYN, NEW YoRK, AssrsNon To LoGAN IRON worms,

or BRooKLir'N, NEW YORK, A conromrrio'N on NEW YORK.

DRIER-.-

Application filed flay 1, 19 13 Serial Nb. 764,895.

To all whom it may concern I,

. Be it known that I, THOMAS C. So nYLER, citizen of the United States, resid ng at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Driers, of which the following isa specification.

My invention relates, to directly heated rotary driers, and the objects thereof are to so construct and arrange the different parts of the apparatus whereby a portion of the heat, unaffected by the material passing through the drier, may be conveyed through an adjustable and independent inner duct and discharged hot into a different section of the inner portion of the drier, without being affected by the varying moisture conditions of the material passing through the drier, so that the different conditions of the material at the entrance will notdetrimentall-y affect the materialalready well under secured t,o the face of the fire-proof struc- Eture, and- 1's provided with openings correwav in the drying process.-

A further objectisto construct a drier in which the amount of' blast or heat conveyedto' the adjustable inner duo-t and different sections of the drier, may be regulatedflat will and during the rotation of the drier,

and hence preserve the continuous operationof the apparatus and have the heating under absolute control at all times and throughout the entire inner length of the drier. I

The invention consistsof structural characteristics and relative arrangements of the elements comprising thefinv'ention which I will be hereinafter more fully described and particularly pointed outin the appended claims.

In the drawings in which similar reference characters indicate the same parts in the several figures of the drawing:-Figure 1 is a longitudinal section, partly in elevation, of the improved drier Fig.2 is a section on line II-II' of Fig. 1; Fig. 3 is a f fragmentary and sectional view showing the position of the adjustable duct when conveying the greatest amount of heat; and Fig. 4 is a similar view as Fig. 3 showing the position of the duct when conveying the least amount of heat.

Referring to the drawings, 1 is the main drier shell' which is provided on its exterior and at suitable intervals with track paths2, which engage and are supported by 1 combined rockers and rollers 3, carried by ation girders 4. The numeral 5 rep- Specification or Letters ream;

Patented Feb. 3,1914.

resents a circular rack embracing and secured to the outside of said shell 1, which is engaged by a pinion 6 on shaft 7 rotated by any suitable motor, not shown, and for the purpose of rotating said shell during the a dry ng. operation, to be hereinafter described. Secured to the inner surface of the shell 1 area series of longitudinally arranged blades or flights 8, 8 for the purpose of picking up and conveying the material through the drier.v

At the head or feed end of the shell 1 is provided a firm and fire-proof structure 9, made of fire-brick or other heat resisting material having a hot furnace gas flue 10 with a flared outlet leading into" the interior and feed end of the shell,= said structure 9 being also provided with an opening or I v 1 J I chute 11 for feeding the wet material into the drier;

1 2' is" a steel head or feed plate which is Zsponding to the flue 10 and chute 11,and an angle iron 13 which closely surrounds Lot-her or outlet end of the'shell 1 opens into the outer side of the feed end of the shell 1 so as tomake a good joint and prevent the escape of the hot gases from the drier. The

a vapor receiving and dust settling chamber 14; which is provided with a conveyer 15 to receive the material after being acted upon i in the drier:v

In the shell land centrally disposedtherein, is provided an adjustable secondary. heat conveying duct 16 which is movably supported on a series of radia'l brackets 17 secured to the inner side of the shell 1, said ibra'ckets'being provided on their inner ends {with rollers 18 engaging corresponding and properly disposed tracks 19 attached to the outer side of the: movable duct 16.

Attached tothe outlet end of the duct 16 ;is a yoke 20 which is loosely and rotatably engaged by a rod 21 having its outer end screw threaded at 22 and provided with a hand vvheel 23 for purposes to be hereinafter described. The inlet end of the duct 16 is preferably provided with a tapered nozzle 24, as shown, in' order to provide an annular flaring opening between the duct 16 and the end of the hot gas fluelO.

The operation of the invention is as follows :The main shell 1 being rotated, the

avetmaterial is fed at a uniform rate through the feed opening 11, thereby dropping through the heating blast of the hot furnace gases issuing from the orifice of the flue 10. After the said material is deposited in the shell 1 it is picked up by the flights 8 and dropped, and conveyed forward and through the drier, during which time it is further acted upon and dried by the hot gases, and then discharged. As the material progresses and passes preferably into the last third of the drier length, it has been found that the temperature of the drying blast as a rule is greatly reduced, and thereupon allows the Vapors or moisture freed from the material to condense, which, condensation will be immediately absorbed by the dried material present at this point, causing a reverse action to ensue from that desired. In order to prevent this condition, and the abovedescribed action, I have provided the secondary adjustable heat conveying duct 16, and by means of the hand wheel 23 said duct 16 can be adjusted so that the tapered nozzle or opening 24 will be in such a position with respect to the flared opening of the flue 10, as to receive the proper amount of fresh hot gases unaffected by the material, and convey said gases to the portion of the drier in which the material is affected by the condensation conditions heretofore described. In Fig. 3 the ductlG is shown as receiving a greater amount of the gases, than when the duct is in the position shown in Fig. 4:.

From the foregoing construction and arrangement, it will be readily seen that the amount of the hot gases thus conveyed to the outlet end of the drier may be regulated at will and at variable sections of the drier during the rotation of the drier, and a great advantage is attained in that the material of varying moisture conditions at the entrance or feed end will not affect detrimentally that material already well under way in the drier, or process of drying.

It will be readily understood that many changes and modifications may be made by any one skilled inrthe art, as for example, in making the shell fixed or stationary and having means for conveying the material through the shell, without departing from the spirit of my invention, and yet preserve the novel and essential features of the apparatus.

\Vhat I claim is 1. A drier comprising a shell, a feed chute communicating with the interior of the shell, means for conveying material through the shell, a hot gas inlet at one end of the shell and an outlet at the other end, said inlet and outlet connected with the interior of said shell, a longitudinally movable duct supported within said shell having a gas inlet at one end and an outlet, and means for adjusting longitudinally the inlet of said duct is capable of being conducted into the duct.

with reference to the hot gas inlet of the shell, whereby more or less of the hot gas is capable of being conducted into the duct.

2. A drier comprising a shell, a feed chute communicating with the interior of the shell, means for conveying material through the shell, a hot gas inlet at one end of the shell and an outlet at the other end, said inlet and outlet connected with the interior of said shell, arms connected with and within the i '11 shell, a longitudinally movable duct supported by said arms and within said shell and having a gas inlet at one end and an, outlet,'and means connected with said duct for longitudinally adjusting the inlet of said duct with reference to the hot gas inlet of the shell, whereby more or less of the hot gas is capable of being conducted into the duct. 3. A drier comprising a rotary shell having conveyer flights on its inner surface, a. feed chute communicating with the interior of the shell, a hot gas inlet at one end of the shell and an outlet at the other end, said inlet and outlet connected with the interior of said shell, a longitudinally movable duct supported within said shell having a gas inlet at one-end and an outlet, and means for longitudinally adjusting the inlet of said duct with reference to the hot gas inlet of the shell, whereby more or less of the hot gas is capable of being conducted into the duct. 4. A drier comprising a rotary shell, a feed chute communicating with the interior of the shell, a hot gas inlet at one end of the shell and an outlet at the other end, said in let and outlet connected directly with the interior of said shell, a longitudinally movable duct supported within said shell having a gas inlet at one end and outlet, and means i for adjusting longitudinally the inlet of said i duct with reference to the hot gas inlet of the shell, whereby more or less of the hot gas 5. A drier comprising a rotary shell having conveyer flights on its inner surface, a feed chute communicating with the interior of the shell, a hot gas inlet and outletcon-- nected with the interior of said shell, radial 7 arms connected with and within the shell,- rollers on the ends of said arms, a duct movably supported by said arms on said rollers and within said shell and having a gas inlet and outlet, and means connected with said duct for adjusting the inlet opening of said duct with reference to the hot gas inlet of the shell.

6. A drier comprising a shell, means for rotating said shell, a feed chute communicating with the interior of the shell, means for conveying material through the shell, a hot gas inlet and outlet connected with the interior of said shell, radial arms connected with and within the shell, a duct movably sup ported on the end of said arms and 1 A 'said shell and having a gas inlet and outlet, and means connected with said duct and independent of the shell for adjusting the inlet opening of said duct wit-h reference to the hot gas inlet of the shell during the rotation of the shell.

7. A drier comprising a rotary shell having conveyer flights on its inner surface, a feed chute communicating withthe interior of the shell, a hot gas inlet and outlet connected with the interior of said shell, radial arms connected with and within the shell, rollers on the ends of the arms, a duct movably supported by said arms and on the rollers and within said shell and having a gas inlet and outlet, and a rod connected with the duct and extending outside of the shell for adjusting the inlet opening of said duct with reference to the hot gas inlet of the shell. p

In testimony whereof I afiix my signature in presence of two witnesses.

THOMAS C. SCHUYLER.

. Witnesses:

CHAS. J. SCHLUTER,

GEORGE A. DOUGHTY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

